Automattic\WooCommerce\Vendor\GraphQL\Utils

TypeInfo::getFieldDefinition │ private static │ WC 1.0

Not exactly the same as the executor's definition of getFieldDef, in this statically evaluated environment we do not always have an Object type, and need to handle Interface and Union types.

Method of the class: TypeInfo{}

No Hooks.

Returns

null. Nothing (null).

Usage

$result = TypeInfo::getFieldDefinition( $schema, $parentType, $fieldNode ): ?FieldDefinition;
$schema(Schema) (required)
.
$parentType(Type) (required)
.
$fieldNode(FieldNode) (required)
.

TypeInfo::getFieldDefinition() code WC 10.9.1

woocommerce/lib/packages/GraphQL/Utils/TypeInfo.php 
private static function getFieldDefinition(Schema $schema, Type $parentType, FieldNode $fieldNode): ?FieldDefinition
{
    $name = $fieldNode->name->value;
    $schemaMeta = Introspection::schemaMetaFieldDef();
    if ($name === $schemaMeta->name && $schema->getQueryType() === $parentType) {
        return $schemaMeta;
    }

    $typeMeta = Introspection::typeMetaFieldDef();
    if ($name === $typeMeta->name && $schema->getQueryType() === $parentType) {
        return $typeMeta;
    }

    $typeNameMeta = Introspection::typeNameMetaFieldDef();
    if ($name === $typeNameMeta->name && $parentType instanceof CompositeType) {
        return $typeNameMeta;
    }

    if (
        $parentType instanceof ObjectType
        || $parentType instanceof InterfaceType
    ) {
        return $parentType->findField($name);
    }

    return null;
}